CN103252873B - Injection-molding servo automatic tooth-twisting system - Google Patents
Injection-molding servo automatic tooth-twisting system Download PDFInfo
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- CN103252873B CN103252873B CN201310131466.0A CN201310131466A CN103252873B CN 103252873 B CN103252873 B CN 103252873B CN 201310131466 A CN201310131466 A CN 201310131466A CN 103252873 B CN103252873 B CN 103252873B
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Abstract
The invention discloses an injection-molding servo automatic tooth-twisting system, overcomes the defects that an existing tooth-twisting mold is not suitable for multi-cavity molds, lacks of precise positioning adjusting mechanisms and is low in multiplicity, and provides an injection-molding servo automatic tooth-twisting system through which tooth-twisting is performed in multiple cavities at the same time, the positioning adjustment is precise, and the multiplicity is high. The injection-molding servo automatic tooth-twisting system comprises an injection molding mold, wherein the injection molding mold is provided with a plurality of screw thread components forming a screw thread core; the control end of the injection molding mold is connected with one interface of a PLC (Programmable logic Controller), and the other interface of the PLC is connected with a servo device; the output end of the servo device is connected with the control end of a mechanical device; the input interface of the PLC is connected with a human-machine interface; the mechanical device comprises a tooth-twisting device arranged on a movable mold plate of the mold; the tooth-twisting device comprises a tooth-twisting electric motor, a tooth-twisting transmission mechanism and a positioning mechanism; and the screw thread components are connected with the tooth-twisting electric motor through the tooth-twisting transmission mechanism. The system has the advantages that the positioning adjustment is precise, tooth-twisting is performed in multiple cavities at the same time, the multiplicity of the servo device is high, the control is automatic, and the screw thread tooth positions of all products with different batches in different cavities are uniform.
Description
Technical field
The invention belongs to injection mold technical field, be specifically related to a kind of injection mo(u)lding servo and automatically twist tooth system.
Background technology
For the accurate thread in precise injection molding part, such as, micromirror headstock screw thread in contemporary optics Miniature precision equipment, not only there is high technical requirement to dimensional accuracy and form accuracy, and for the homogeneity of part, also there is extremely strict technical requirement the tooth position of rising of such as screw thread, but the micromirror headstock screw thread of prior art, owing to being subject to mould structure and processing technology, the restriction of annex corollary equipment etc., the screw initial thread tooth of lens mount is in multiple-cavity mold is produced, it is different that the screw thread of each die cavity plays tooth position, even with the product screw thread of die cavity rise tooth angle also cannot, but this lens mount screw thread and camera lens are automatically selected into cooperation, because be that manipulator manipulates automatically, each cooperation position and the number of turns require again it must is identical, therefore the screw initial thread tooth position of practical set product is different, the moment of torsion heterogeneity of automatic matching thread can be caused, the direct product quality that affects even causes product rejection.
Such as Chinese Patent Application No. 201020669087.9, the utility model patent that name is called " a kind of strand tooth mould ", disclose a kind of strand tooth mould, comprise cover half core, moving-mould-core is provided with at cover half core side, cover half mold insert and insert are located on cover half core and moving-mould-core respectively, the first fixed block is provided with successively at the side of moving-mould-core, gear and the second fixed block, screw thread mold insert is arranged in the first fixed block, in gear and the second fixed block, the end of screw thread mold insert is located in moving-mould-core by inserts, the first ball bearing guide bushing and the second ball bearing guide bushing is respectively equipped with between screw thread mold insert and the first fixed block and the second fixed block, gear is meshed with power transmission shaft, driving sleeve is outside transmission device, transmission device is connected with the output shaft of motor by key, motor is controlled by PMC control panel.There is following a few point defect in this strand tooth mould, first it is to single screw thread strand tooth, therefore can only be applicable to the single screw thread of single die cavity, cannot adapt to a mould with multi-cavities structure produced in enormous quantities; Second point its lack precision positioning guiding mechanism, especially can not carry out the artificial fine adjustment of initial position; Thirdly its multiplicity can not ensure, the screw thread difference of different batches is large, and especially to play tooth position difference large for screw thread.
Summary of the invention
The technical issues that need to address of the present invention are, the defect being unsuitable for multiple-cavity mold, lacking precision positioning guiding mechanism and multiplicity difference that the strand tooth mould overcoming prior art exists, the injection mold providing a kind of energy cavity simultaneously to twist tooth, energy precision positioning adjustment and multiplicity high twist tooth system automatically.
The object of the invention is to be achieved by following technical proposals: a kind of injection mo(u)lding servo twists tooth system automatically, comprise injection mold, injection mold is provided with the rotating screw member that several form thread core, the control end of injection mold is connected with PLC interface, another interface of PLC is connected with servomechanism installation, the output of servomechanism installation is connected with the control end of mechanical device, and the input interface of PLC is connected with man-machine interface; Mechanical device comprises the strand tooth device be located on injection mold moving platen, and strand tooth device comprises strand tooth motor, strand tooth transmission mechanism and detent mechanism, and screw member is connected with strand tooth motor by strand tooth transmission mechanism.
As preferably, strand tooth system flow process is as follows: (1) operator for outturn sample and product design parameter, by the initial position of detent mechanism debugging strand tooth motor, to guarantee that the screw thread that screw member meets workpiece plays tooth status requirement; (2) operator arranges technological parameter by man-machine interface and inputs to PLC; (3) PLC controls injection machine action from injection machine return state information, injection machine injection mo(u)lding, injection mold die sinking; (4) PLC controls strand tooth device action by servomechanism installation, the multidate information of mechanical device is fed back to PLC by servomechanism installation, the action of strand tooth device comprises the corner that strand tooth motor rotates setting accurately, and strand tooth transmission mechanism drives all screw members to rotate the demoulding simultaneously; (5) injection-molded work is taken out; (6) PLC controls the reset of strand tooth device by servomechanism installation.
Strand tooth device and injection mold are connected with PLC by servomechanism installation, PLC is connected with injection molding machine control device and man-machine interface respectively by on-line interface, coordinate the sensor feedback status information be provided with in the checkout gear that is provided with of injection machine and transmission mechanism, realize complete machine Based Intelligent Control, operating personnel only need before manufacture, injection moulding are produced and adjust machine well corresponding position and data early stage, after relative parameters setting, just can realize full-automatic accurate to produce, comprise servo and automatically cut with scissors tooth.When die sinking or hinge tooth operation go wrong, fed back to the signal of PLC by servomechanism installation, PLC feeds back to injection machine again through signal transacting, thus makes injection machine and manipulator make corresponding process.PLC has that reliability is high, antijamming capability is strong, comprehensive, perfect in shape and function, cost performance is high, applicability is strong, technology maturation, system development cycle are short, change strong adaptability to production technology, device is easy to get, and have network interface, with the advantage of the online exchange information of PC.
As preferably, described detent mechanism comprises index dial and pointer, and index dial is fixedly connected with moving platen and its axis and strand tooth motor shaft coaxial line, pointer with twist tooth motor shaft and be fixedly connected with, the periphery of index dial is provided with graduation mark.
As preferably, described detent mechanism comprises index dial and the vernier index dial corresponding with it, index dial and strand tooth motor shaft coaxial line being fixedly connected with moving platen, vernier index dial is fixedly connected with strand tooth motor shaft, the periphery of index dial is provided with graduation mark, the periphery of vernier index dial is provided with difference graduation mark, and the scale division value certain ratio value less of the scale division value of the graduation mark of index dial periphery of difference graduation mark, this ratio value is 1/10,1/20,1/30,1/40 or 1/50.
As preferably, twist tooth transmission mechanism and be made up of drive sprocket, chain, several driven sprockets identical with screw member number of packages, drive sprocket is fixedly connected with strand tooth motor shaft, and driven sprocket is connected to the rear end of each screw member.
As preferably, be connected to the driven sprocket of each screw member rear end, its structure is identical, and the chain slack list between adjacent driven sprocket is all provided with tightener sprocket.
As preferably, described detent mechanism comprises locking device.
As preferably, the end of driven sprocket is connected with moving platen with sleeve by bearing, and the rear end of screw member and the axis hole of driven sprocket are by spline joint, and the moving platen position corresponding with screw member rear end is provided with and holds the axis hole of screw member along axis movement.
As preferably, injection machine is positioned at the manipulator that mould top position is provided with automatic part picking, the action of manipulator is controlled by PLC.
As preferably, screw member is provided with shoulder close to middle position, and driven sprocket is fixedly connected on the front side of shoulder, and the back segment of screw member is guiding shaft part, and the axis hole on guiding shaft part and moving platen is slidably matched.
The servomechanism installation that injection mo(u)lding servo twists tooth system is automatically closed-loop system, by PLC Based Intelligent Control, control the uniformity playing tooth angle that precision injection molding strand tooth reaches miniature screw thread, the tooth angle of rising that camera lens is coordinated with lens mount thread obtains unified fit angle, the process of lens focusing is made accurately to reach the focal position of setting, to reach the quality requirement of high pixel, increase substantially production efficiency simultaneously.Product screw thread interchangeability is high, reaches the technical requirement that threaded engagement torque range controls within 5-30 gf.cm.
The invention has the beneficial effects as follows:
1, can accurate adjustment locate, can carry out the artificial fine adjustment of initial position, Adjustment precision reaches 0.02mm;
2, can twist tooth by cavity, output is high simultaneously;
3, there is servomechanism installation to make screw thread play placed repetitive positioning accuracy and reach 0.002mm ~ 0.005mm;
4, automatically control, ensure that all over products screw thread of different batches and different die cavity plays all unifications of tooth position;
5, mould parting synchronous or closely can be connected the demoulding with screw member, saves man-hour, raises the efficiency, and reduces the amount of labour.
Accompanying drawing explanation
Fig. 1 is the system principle block diagram of an embodiment of the present invention;
Fig. 2 is the structural representation of embodiment;
Fig. 3 is a kind of strand tooth transmission mechanism schematic diagram;
Fig. 4 is index dial and the vernier index dial calibration schematic diagram of another kind of detent mechanism.
In figure, injection mold 1; Moving platen 11; PLC2; Servomechanism installation 3; Mechanical device 4; Strand tooth device 41; Strand tooth transmission mechanism 42; Drive sprocket 421; Driven sprocket 422; Chain 423; Tightener sprocket 424; Detent mechanism 43; Index dial 431; Graduation mark 432; Vernier index dial 433; Difference graduation mark 434; Strand tooth motor 44; Man-machine interface 5; Injection machine 6; Manipulator 7.
Detailed description of the invention
Below in conjunction with accompanying drawing and specific embodiments, the invention will be further described.
Embodiment 1: as shown in Fig. 1 ~ Fig. 2, a kind of injection mo(u)lding servo twists tooth system automatically, comprise injection mold 1, injection mold 1 is provided with 5 die cavities, all be furnished with the rotating screw member forming thread core in each die cavity, the control end of injection mold 1 is connected with PLC2 interface, and another interface of PLC2 is connected with servomechanism installation 3, the output of servomechanism installation 3 is connected with the control end of mechanical device 4, and the input interface of PLC2 is connected with man-machine interface 5, mechanical device 4 comprises the strand tooth device 41 be located on injection mold 1 moving platen 11, strand tooth device 41 comprises strand tooth motor 44, strand tooth transmission mechanism 42 and detent mechanism 43, strand tooth motor 44 is servomotor, and 5 screw members are connected with strand tooth motor by strand tooth transmission mechanism, strand tooth transmission mechanism is by drive sprocket 421, 5 driven sprockets 422 and chain 423 are formed, drive sprocket 421 is fixedly connected with strand tooth motor shaft, 5 driven sprockets 422 are connected to the rear end of each screw member, the rear end of screw member is provided with 6 tartar keys, screw member is by the splined hole sliding connection in the middle of spline and driven sprocket 422, the end of driven sprocket 422 is connected with moving platen 11 with sleeve by bearing, the rear end of screw member and the axis hole of driven sprocket 422 pass through spline joint, moving platen 11 position corresponding with screw member rear end is provided with and holds the axis hole of screw member along axis movement, the advantage of this structure to make the first demoulding of screw member dynamic model parting again, can certainly first dynamic model parting again the screw member demoulding or the demoulding on one side on one side parting to save time, the end of driven sprocket 422 is allow screw member off-load by the advantage that bearing and sleeve are connected with moving platen 11, and the lateral pull of chain can not be delivered on screw member, injection machine is provided with the manipulator 7 of automatic part picking, and the action of manipulator 7 is controlled by PLC2.
PLC control flow is as follows: (1) operator, for outturn sample and product design parameter, debugs the initial position of strand tooth motor by detent mechanism 43, to guarantee that the screw thread that screw member meets workpiece plays tooth status requirement; (2) operator arranges technological parameter by man-machine interface 5 and inputs to PLC2; (3) PLC2 controls injection machine 6 action and from injection machine 6 return state information, also shapes terminate injection mold 1 die sinking to injection mo(u)lding; (4) PLC2 controls the action of strand tooth device 41 by servomechanism installation 3, the multidate information of mechanical device 4 is fed back to PLC2 by servomechanism installation 3, the action of strand tooth device 41 comprises the corner that strand tooth motor rotates setting accurately, and strand tooth transmission mechanism drives all screw members to rotate the demoulding simultaneously; (5) manipulator 7 takes out injection-molded work; (6) PLC2 is resetted by servomechanism installation 3 control strand tooth device 41.
Strand tooth device 41 and injection mold 1 are connected with PLC2 by servomechanism installation 3, PLC2 is connected with injection machine 6 control device and man-machine interface 5 respectively by on-line interface, coordinate the sensor feedback status information be provided with in the checkout gear that is provided with of injection machine and transmission mechanism, realize complete machine Based Intelligent Control, operating personnel only need before manufacture, injection moulding are produced and adjust machine well corresponding position and data early stage, after relative parameters setting, just can realize full-automatic accurate to produce, comprise servo and automatically cut with scissors tooth.When die sinking or hinge tooth operation go wrong, fed back to the signal of PLC2 by servomechanism installation 3, PLC feeds back to injection machine 6 again through signal transacting, thus makes injection machine 6 and manipulator 7 make corresponding process.PLC has that reliability is high, antijamming capability is strong, comprehensive, perfect in shape and function, cost performance is high, applicability is strong, technology maturation, system development cycle are short, change strong adaptability to production technology, device is easy to get, there is network interface, with the advantage of the online exchange information of PC; Utilize servomechanism installation and PLC automatically to control, make screw thread play placed repetitive positioning accuracy and reach 0.002mm ~ 0.005mm.
Detent mechanism 43 comprises index dial 431 and pointer, and index dial 431 is fixedly connected with moving platen 11 and its axis and strand tooth motor shaft coaxial line, and pointer is fixedly connected with strand tooth motor shaft, and the periphery of index dial 431 is provided with graduation mark 432.Detent mechanism comprises locking device.
Be connected to the driven sprocket 422 of each screw member rear end, its structure is identical, and chain 423 slack list between adjacent driven sprocket is all provided with tightener sprocket 424, as shown in Figure 3.
Injection mo(u)lding servo is automatically twisted tooth system and is passed through Based Intelligent Control, control the uniformity playing tooth angle that precision injection molding strand tooth reaches miniature screw thread, the tooth angle of rising that camera lens is coordinated with lens mount thread obtains unified fit angle, the process of lens focusing is made accurately to reach the focal position of setting, to reach the quality requirement of high pixel, increase substantially production efficiency simultaneously.Realize the synchronous automatic demoulding of whole screw member by strand tooth device, without the need to the artificial turn demoulding piece by piece, also without the need to arranging the demoulding respectively of many Tao Jiao tooth mechanisms, saving man-hour in a large number, raising the efficiency, the amount of lightening one's labor.
Embodiment 2: screw member is provided with shoulder close to middle position, driven sprocket is fixedly connected on the front side of shoulder, the back segment of screw member is guiding shaft part, the axis hole led on shaft part and moving platen is slidably matched, 5 driven sprockets are fixedly connected with 5 screw members respectively, when after dynamic model parting to certain distance, PLC controls strand tooth device action by servomechanism installation, servomotor drives screw member to rotate by chain sprocket mechanism, due to the propulsive thrust effect by workpiece negative thread, screw member rotates while movement is exited backward, screw member is the speeds match that retreats of the speed of movement and moving platen backward, namely screw member rotates one turn, the distance that moving platen retreats equals a pitch of screw member just, this strand tooth scheme more can save man-hour, reduce costs.All the other structure &processes flow processs are identical with embodiment 1.
Embodiment 3: detent mechanism comprises index dial 431 and the vernier index dial 433 corresponding with it, index dial 431 and strand tooth motor shaft coaxial line being fixedly connected with moving platen 11, vernier index dial 433 is fixedly connected with strand tooth motor shaft, the periphery of index dial 431 is provided with graduation mark 432, the periphery of vernier index dial 433 is provided with difference graduation mark 434, the scale division value certain ratio value less of the scale division value of the graduation mark 432 of index dial 431 periphery of difference graduation mark 433, this ratio value is 1/50, this difference calibration can make Adjustment precision reach 0.02mm, all the other structure &processes flow processs are with embodiment 1, as shown in Figure 4.
Injection mo(u)lding servo of the present invention is automatically twisted tooth system and is had and can accurate adjustment locate, and can twist tooth by cavity simultaneously, have servomechanism installation repeatable accuracy high; Automatic control, ensure that all over products screw thread of different batches and different die cavity plays all unified advantage in tooth position, if those skilled in the art does simple amendment to foregoing invention content or replaces, such change can not be thought to depart from the scope of the present invention, all like this to the apparent amendment of those skilled in the art by be included in claim of the present invention scope within.
Claims (9)
1. an injection mo(u)lding servo twists tooth system automatically, comprise injection mold, injection mold is provided with the rotating screw member that several front ends form thread core, it is characterized in that, the control end of injection mold is connected with PLC interface, another interface of PLC is connected with servomechanism installation, and the output of servomechanism installation is connected with the control end of mechanical device, and the input interface of PLC is connected with man-machine interface; Mechanical device comprises the strand tooth device be located on injection mold moving platen, and strand tooth device comprises strand tooth motor, strand tooth transmission mechanism and detent mechanism, and screw member is connected with strand tooth motor by strand tooth transmission mechanism; Strand tooth system flow process is as follows: (1) operator for outturn sample and product design parameter, by the initial position of detent mechanism debugging strand tooth motor, to guarantee that the screw thread that screw member meets workpiece plays tooth status requirement; (2) operator arranges technological parameter by man-machine interface and inputs to PLC; (3) PLC controls injection machine action from injection machine return state information, injection machine injection mo(u)lding, injection mold die sinking; (4) PLC controls strand tooth device action by servomechanism installation, the multidate information of mechanical device is fed back to PLC by servomechanism installation, the action of strand tooth device comprises the corner that strand tooth motor rotates setting accurately, and strand tooth transmission mechanism drives all screw members to rotate the demoulding simultaneously; (5) injection-molded work is taken out; (6) PLC controls the reset of strand tooth device by servomechanism installation.
2. injection mo(u)lding servo according to claim 1 twists tooth system automatically, it is characterized in that, described detent mechanism comprises index dial and pointer, index dial is fixedly connected with moving platen and its axis and strand tooth motor shaft coaxial line, pointer is fixedly connected with strand tooth motor shaft, and the periphery of index dial is provided with graduation mark.
3. injection mo(u)lding servo according to claim 1 twists tooth system automatically, it is characterized in that, described detent mechanism comprises index dial and the vernier index dial corresponding with it, index dial and strand tooth motor shaft coaxial line being fixedly connected with moving platen, vernier index dial is fixedly connected with strand tooth motor shaft, the periphery of index dial is provided with graduation mark, the periphery of vernier index dial is provided with difference graduation mark, the scale division value certain ratio value less of the scale division value of the graduation mark of index dial periphery of difference graduation mark, this ratio value is 1/10,1/20,1/30,1/40 or 1/50.
4. the injection mo(u)lding servo according to claim 1,2 or 3 twists tooth system automatically, it is characterized in that, strand tooth transmission mechanism is made up of drive sprocket, chain, several driven sprockets identical with screw member number of packages, drive sprocket is fixedly connected with strand tooth motor shaft, and driven sprocket is connected to the rear end of each screw member.
5. injection mo(u)lding servo according to claim 4 twists tooth system automatically, it is characterized in that, is connected to the driven sprocket of each screw member rear end, and its structure is identical, and the chain slack list between adjacent driven sprocket is all provided with tightener sprocket.
6. injection mo(u)lding servo according to claim 4 twists tooth system automatically, it is characterized in that, described detent mechanism comprises locking device.
7. injection mo(u)lding servo according to claim 6 twists tooth system automatically, it is characterized in that, the end of driven sprocket is connected with moving platen with sleeve by bearing, the rear end of screw member and the axis hole of driven sprocket are by spline joint, and the moving platen position corresponding with screw member rear end is provided with and holds the axis hole of screw member along axis movement.
8. the injection mo(u)lding servo according to claim 1,2 or 3 twists tooth system automatically, it is characterized in that, injection machine is positioned at the manipulator that mould top position is provided with automatic part picking, the action of manipulator is controlled by PLC.
9. injection mo(u)lding servo according to claim 4 twists tooth system automatically, it is characterized in that, screw member is provided with shoulder close to middle position, and driven sprocket is fixedly connected on the front side of shoulder, the back segment of screw member is guiding shaft part, and the axis hole led on shaft part and moving platen is slidably matched.
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| CN201310131466.0A CN103252873B (en) | 2013-04-17 | 2013-04-17 | Injection-molding servo automatic tooth-twisting system |
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| CN201310131466.0A CN103252873B (en) | 2013-04-17 | 2013-04-17 | Injection-molding servo automatic tooth-twisting system |
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| CN103252873B true CN103252873B (en) | 2015-05-20 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103895125A (en) * | 2014-04-11 | 2014-07-02 | 昆山市兴凯胜精密模具有限公司 | Hinge thread mold capable of accurately resetting starting point of thread |
| CN104567683A (en) * | 2015-01-16 | 2015-04-29 | 福建华兴玻璃有限公司 | Device for measuring sizes of tooth forming positions of multi-head screw tooth glass bottlenecks |
| CN107745484B (en) * | 2017-10-24 | 2024-03-12 | 辽宁中蓝光电科技有限公司 | Micro thread front mould hinge tooth mechanism mould |
| CN109228163B (en) * | 2018-10-17 | 2024-02-06 | 嘉亨家化股份有限公司 | Injection mold with adjustable thread starting teeth |
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| US5229952A (en) * | 1991-01-18 | 1993-07-20 | Cincinnati Milacron Inc. | Control for injection molding machine |
| CN101947840A (en) * | 2010-08-05 | 2011-01-19 | 华南理工大学 | Servo motor control system of all-electric injection molding machine and control method thereof |
| CN201900694U (en) * | 2010-12-20 | 2011-07-20 | 上海天海电子有限公司 | Tapping mold |
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Address after: 315400 No.184, Shunyu West Road, Yuyao City, Ningbo City, Zhejiang Province Patentee after: Bellon Precision Technology Co.,Ltd. Address before: 315400 No.184, Shunyu West Road, Yuyao City, Ningbo City, Zhejiang Province Patentee before: Ningbo Beilong Precision Molding Co.,Ltd. |
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Address after: 315400 No.184, Shunyu West Road, Yuyao City, Ningbo City, Zhejiang Province Patentee after: Ningbo Beilong Precision Molding Co.,Ltd. Address before: 315400 C20, Far East Industrial City, Ningbo, Zhejiang, Yuyao Patentee before: NINGBO BEILONG PRECISION MOLDING Co.,Ltd. |